Success brings critics. Human nature being what it is, if you are doing well, you must be cheating.
In HS sports the cheating is "recruiting" - which is a loaded word. It means coaches or their runners are contacting players/families and offering inducements. Because enrollment is an administrative matter, as well as an ohsaa compliance issue, recruiting involves an AD, principal, and maybe even a superintendent's cooperation to do on a big scale where many high profile athletes are recruited year after year. So, all of those people have to be corrupt and act in a conspiracy to accomplish the cheating.
We know it has been done, but it is rare because most adults who are professionals in education are focused on educating kids and arent willing to engage in unethical and corrupt activity to win a few ball games.
In almost every case where "recruiting" is alleged, we have a transfer of a talented player or players that gets everyone's panties in a wad. Kids/parents want to go to another place because of they think there is a better situation to go to. It may be about education or sports or a mix of motivations. As long as the coach/school didnt initiate the contact and offer inducement, and the transfer is done within the rules, it's no one's business what decisions parents make for their kids.
The "recruiting" that goes on is done by the kids themselves - who become friends thru AAU and want to play together.
Private and magnet schools have to recruit students to survive. They will get the cheating accusation thrown at them more often because the line between the student and the athlete is hard to keep distinct.